The weak ordinarity conjecture and $F$-singularities
The weak ordinarity conjecture and $F$-singularities
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弱平凡猜想和$F$-奇点
DOI:
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发表时间:
2013
期刊:
影响因子:
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通讯作者:
S. Takagi
中科院分区:
文献类型:
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作者:
B. Bhatt;Karl Schwede;S. Takagi
Recently M. Mustata and V. Srinivas related a natural conjecture about the Frobenius action on the cohomology of the structure sheaf after reduction to characteristic $p > 0$ with another conjecture connecting multiplier ideals and test ideals. We generalize this relation to the case of singular ambient varieties. Additionally, we connect these results to a conjecture relating $F$-injective and Du Bois singularities. Finally, using an unpublished result of Gabber, we also show that $F$-injective and Du Bois singularities have a common definition in terms of smooth hypercovers.